RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        EELS and electron diffraction studies on possible bonaccordite crystals in pressurized water reactor fuel CRUD and in oxide films of alloy 600 material

        Jiaxin Chen,Fredrik Lindberg,Daniel Wells,Bernt Bengtsson 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.4

        Experimental verification of boron species in fuel CRUD (Chalk River Unidentified Deposit) would provideessential and important information about the root cause of CRUD-induced power shifts (CIPS). Todate, only bonaccordite and elemental boron were reported to exist in fuel CRUD in CIPS-troubledpressurized water reactor (PWR) cores and lithium tetraborate to exist in simulated PWR fuel CRUDfrom some autoclave tests. We have reevaluated previous analysis of similar threadlike crystals alongwith examining some similar threadlike crystals from CRUD samples collected from a PWR cycle that hadno indications of CIPS. These threadlike crystals have a typical [Ni]/[Fe] atomic ratio of ~2 and similarcrystal morphology as the one (bonaccordite) reported previously. In addition to electron diffractionstudy, we have applied electron energy loss spectroscopy to determine boron content in such a crystaland found a good agreement with that of bonaccordite. Surprisingly, such crystals seem to appear also oncorroded surfaces of Alloy 600 that was exposed to simulated PWR primary water with a dissolvedhydrogen level of 5 mL H2/kg H2O, but absent when exposed under 75 mL H2/kg H2O condition. It remainsto be verified as to what extent and in which chemical environment this phase would be formed inPWR primary systems.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼